Structure

Fluorescein
Fluorescein

General Information

Product Name Fluorescein
CAS Number 2321-07-5
Molecular Formula C20H12O5
Molecular Weight 332.31
MDL Number MFCD00005050
EC Number 219-031-8
Synonym

3′,6′-Dihydroxyspiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 9-(o-carboxyphenyl)-6-hydroxy-3H-xanthen-3-one; 3′,6′-dihydroxyfluoran, 3′,6′-fluorandiol; 9-(o-carboxyphenyl)-6-hydroxy-3-isoxanthenone, resorcinolphthalein,  D & C Yellow no. 7, C.I. Solvent Yellow 94 ,  C.I. 45350:1, C20H12O5, CAS 2321-07-5

Specification

Grade Indicators
Solubility In EtOHpasses test
Loss On Drying≤5%
Sulfated Ash≤0.3%
Lambda Max.490-493 nm λ(pH8.0)
Mass Absorptivity≥115 L/(cm·g) λ(pH8.0)
Sensitivity Testpasses test

References

Colour Index Number 45350
Merck Index(14) 4159
RTECS# LM5075000

Packaging Information

Packaging 25kg in carton drum (32cm*58cm)
   1kg in foil bag (10cm*15cm)

GHS

Pictogram: GHS07: Exclamation mark
Signal Word: Warning
Hazard Statements: H319: Causes serious eye irritation.
Precautionary Statements: P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing.

Transport Information

UN Number:
Class:
Packing Group
HS Number 3204.90.0000
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